External
links
The sites here can help you do some research for your essays.

Viewing
the files:

Most
of the files
below are .pdf files. If you have Adobe
Acrobat, that program
will read your files. If you don't, I'd recommend that you
install another program that will view PDF files:PDFXChange
PDF
Reader
(for Windows XP, Vista, 7, or 8).